煤矿安全2019，Vol.50Issue(7)：88-91,95,5.DOI:10.13347/j.cnki.mkaq.2019.07.020
超深孔爆破扩裂提高硬岩巷道机掘效能技术
Ultra Deep Hole Blasting Cracking to Improve Excavating Efficiency of Hard Rock Roadway
左胜1
作者信息
- 1. 阳泉煤业(集团)有限责任公司,山西 阳泉045000
- 折叠
摘要
Abstract
To solve the problems of low excavation efficiency, large cutting tooth loss and serious dust in the tunneling process of full-section hard rock roadway in coal mine, the ultra-deep hole blasting cracking technology is proposed to increase the crack and damage range in the rock mass, and to keep the speed advantage of tunneling soft rock roadway. Taking Xinyuan Coal Mine as an example, the ultra-deep hole blasting design parameters are determined by improving the ultra-deep hole blasting technology and the typical rock sample static and dynamic experiments. The field test shows that the technical scheme can reduce the pick consumption by 59.8%, and the average dust amount decreases by 49.9% in the case of full-section hard rock, which significantly reduces the cost of tunneling and improves the working environment.关键词
超深孔爆破/硬岩巷道/综掘法/动力学实验/动态抗压强度Key words
ultra deep hole blasting/hard rock roadway/fully-mechanized tunneling/dynamic experiment/dynamic compressive strength分类
矿业与冶金引用本文复制引用
左胜..超深孔爆破扩裂提高硬岩巷道机掘效能技术[J].煤矿安全,2019,50(7):88-91,95,5.
